EP0283054B1 - Montage de générateur - Google Patents

Montage de générateur Download PDF

Info

Publication number
EP0283054B1
EP0283054B1 EP19880105442 EP88105442A EP0283054B1 EP 0283054 B1 EP0283054 B1 EP 0283054B1 EP 19880105442 EP19880105442 EP 19880105442 EP 88105442 A EP88105442 A EP 88105442A EP 0283054 B1 EP0283054 B1 EP 0283054B1
Authority
EP
European Patent Office
Prior art keywords
generator
breaker
generator circuitry
disconnector
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19880105442
Other languages
German (de)
English (en)
Other versions
EP0283054A2 (fr
EP0283054A3 (en
Inventor
Takao C/O Mitsubishi Denki K.K. Yamauchi
Hayato C/O Mitsubishi Denki K.K. Suzuki
Osamu C/O Mitsubishi Denki K.K. Iwabuchi
Toshinobu C/O Mitsubishi Denki K.K. Kishimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3175883U external-priority patent/JPS59138332U/ja
Priority claimed from JP3175683U external-priority patent/JPS59138330U/ja
Priority claimed from JP3175783U external-priority patent/JPS59138331U/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to EP19880105442 priority Critical patent/EP0283054B1/fr
Publication of EP0283054A2 publication Critical patent/EP0283054A2/fr
Publication of EP0283054A3 publication Critical patent/EP0283054A3/en
Application granted granted Critical
Publication of EP0283054B1 publication Critical patent/EP0283054B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards

Definitions

  • the invention relates to a generator circuitry having a first disconnector, a breaker and a second disconnector connected in series with one another between a generator and a bus connected to a power supply, the breaker having an interelectrode capacitance between its contacts in its open position.
  • a circuit which relates to an inhibitor circuit for a generator switch for preventing that a generator and a power network are connected to each other when the voltages are of opposite or non-synchronized phase. Connection is only possible if the voltage difference between generator and power network is below a predetermined value. No mention is being made about capacitive coupling over the electrodes of an open breaker switch.
  • Fig. 1 schematically shows a known ordinary generator circuitry employed for connection or disconnection of a generator (3) to or from a bus (2) connected to an AC power supply (1).
  • the circuitry comprises a first connector (4), a breaker (5), a second connector (6) and a main transformer (7) which are connected in series with one another in this order between the bus (2) and the generator (3).
  • Fig. 2 is an equivalent circuit diagram of the generator circuitry of Fig. 1, wherein there are shown an internal inductance (1a) of the power supply (1), an internal inductance (3a) of the generator (3), a capacitance (8) of a capacitor inserted between the ground and the joint of the first disconnector (4) and the breaker (5), a capacitance (9) of a capacitor inserted between the ground and the joint of the second disconnector (6) and the generator (3), and a capacitance (5a) of an interelectrode capacitor in the breaker (5).
  • an operation of connecting the generator (3) to or disconnecting the same from the power supply (1) is performed by closing or opening the breaker (5) in the state where the power supply (1) and the generator (3) are synchronized with each other. During this operation, the two disconnectors (4) and (6) connected to the two sides of the breaker (5) are kept closed.
  • each of such disconnectors needs to interrupt the charge current flowing to the capacitance of the interelectrode capacitor in the breaker (5).
  • the interelectrode voltage applied between the two disconnectors (4) and (6) reaches a high level since the terminal voltage across the capacitance (5a) is high.
  • Such a high interelectrode voltage renders severe the condition for interruption of the charge current while causing generation of an abnormally high voltage due to re-ignition. Therefore, it is requisite for each of the disconnectors (4) and (6) to have a sufficient switching capacity to withstand such a high voltage, hence inducing a disadvantage that the generator circuitry becomes dimensionally large.
  • the generator circuitry of Fig. 3 embodying this invention has a first capacitor (21) inserted between the ground and the joint of a first disconnector (4) and a breaker (5), and a second capacitor (22) inserted between the ground and the joint of a second disconnector (6) and the breaker (5). Since other components are the same as those shown previously in Fig. 1, the corresponding ones are represented by like reference numerals and a repeated explanation is omitted here.
  • Each of the capacitances of the first and second capacitors (21, 22) is so selected as to be approximate to or greater than the interelectrode capacitance (5a) in the breaker (5).
  • Fig. 4 shows an equivalent circuit in the state where the breaker (5) and the first disconnector (4) are closed while the second disconnector (6) is open. Since the capacitance of the capacitor (22) is equal to or greater than the interelectrode capacitance (5a) in the breaker (5) as mentioned previously, an action of voltage division is exerted so that, even when the generator (3) is not exactly synchronized with the power supply, the voltage applied across the second disconnector (6) becomes far lower than that in the absence of the capacitor (22), thereby reducing the interruption duty of the second disconnector.
  • each of the two disconnectors (4, 6) may be an ordinary one having a normal interruption capacity.
  • the capacitors (21, 22) may be condenser type bushings or gas-insulated condensers. In place of such capacitors, it is possible to employ other impedance elements such as zinc oxide type arresters adapted for suppression of abnormal voltage.
  • the present invention is further applicable to a generator circuitry of Fig. 5, which is different from the foregoing embodiment of Fig. 1 in the following point. That is, a second bus (32) is connected to the aforesaid bus (2) via a second breaker (31), and a third disconnector (33) is inserted between the second bus (32) and the first breaker (5).
  • Fig. 6 shows another exemplary generator circuitry of a composite interruption system to which the invention can be applied., wherein the same components as those used in the foregoing circuitry of Fig. 5 are represented by like reference numerals and a repeated explanation is omitted.
  • a reference numeral (3a) denotes a second generator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (7)

  1. Circuit de générateur comprenant un premier sectionneur (4), un coupe-circuit (5) et un second sectionneur (6) reliés en série les uns aux autres entre un générateur (3) et un bus (2) raccordé à une alimentation en énergie (1), le coupe-circuit présentant une capacité interélectrode entre ses contacts dans sa position ouverte, caractérisé en ce qu'un élément d'impédance (22) est inséré entre la terre et la jonction entre ledit coupe-circuit (5) et ledit second sectionneur (6).
  2. Circuit de générateur selon la revendication 1, comprenant en outre un autre élément d'impédance (21) inséré entre la terre et la jonction entre ledit premier sectionneur (4) et ledit coupe-circuit (5).
  3. Circuit de générateur selon la revendication 1 ou la revendication 2, dans lequel ledit élément d'impédance est un condensateur (21, 22).
  4. Circuit de générateur selon la revendication 3, dans lequel la capacité dudit condensateur (21, 22) est égale ou supérieure à la capacité interélectrode (5a) dudit coupe-circuit (5).
  5. Circuit de générateur selon la revendication 3, dans lequel ledit condensateur (21, 22) est une traversée de type condensateur.
  6. Circuit de générateur selon la revendication 3, dans lequel ledit condensateur (21, 22) est un condensateur isolé au gaz.
  7. Circuit de générateur selon la revendication 2, dans lequel ledit élément d'impédance (21, 22) est un parafoudre du type à oxyde de zinc.
EP19880105442 1983-03-04 1984-02-28 Montage de générateur Expired - Lifetime EP0283054B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19880105442 EP0283054B1 (fr) 1983-03-04 1984-02-28 Montage de générateur

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP3175883U JPS59138332U (ja) 1983-03-04 1983-03-04 発電機回路
JP31757/83 1983-03-04
JP31758/83 1983-03-04
JP3175683U JPS59138330U (ja) 1983-03-04 1983-03-04 発電機回路
JP3175783U JPS59138331U (ja) 1983-03-04 1983-03-04 発電機回路
JP31756/83 1983-03-04
EP19880105442 EP0283054B1 (fr) 1983-03-04 1984-02-28 Montage de générateur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP84102054.8 Division 1984-02-28

Publications (3)

Publication Number Publication Date
EP0283054A2 EP0283054A2 (fr) 1988-09-21
EP0283054A3 EP0283054A3 (en) 1989-06-28
EP0283054B1 true EP0283054B1 (fr) 1992-02-19

Family

ID=27441416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880105442 Expired - Lifetime EP0283054B1 (fr) 1983-03-04 1984-02-28 Montage de générateur

Country Status (1)

Country Link
EP (1) EP0283054B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203102A1 (de) * 1972-01-20 1973-07-26 Siemens Ag Druckgasisolierte schaltanlage
DE2316099A1 (de) * 1973-03-28 1974-10-10 Siemens Ag Anordnung zur erfassung mangelnder betriebsfaehigkeit von vakuumschaltgefaessen
CH573674A5 (fr) * 1974-07-02 1976-03-15 Bbc Brown Boveri & Cie

Also Published As

Publication number Publication date
EP0283054A2 (fr) 1988-09-21
EP0283054A3 (en) 1989-06-28

Similar Documents

Publication Publication Date Title
EP0532045B1 (fr) Système d'alimentation en puissance électrique
JPS6013254B2 (ja) 直流しや断器
US20080203062A1 (en) Switchgear
US4442469A (en) DC Circuit breaker apparatus
EP0283054B1 (fr) Montage de générateur
US4612495A (en) Generator circuitry
US5293110A (en) Bridge capacitor bank installation
JP3175507B2 (ja) ガス絶縁開閉装置及びその操作方法
US3736437A (en) Vacuum switch apparatus
CN100365902C (zh) 能量分配网
JPH06349386A (ja) 遮断器のサージ抑制装置
SU1525638A1 (ru) Устройство дл испытани выключателей на отключение емкостного тока
SU796986A1 (ru) Устройство емкостной поперечнойКОМпЕНСАции
JPS62113326A (ja) 直流遮断器
JPS63178759A (ja) 突入電流防止回路
JPS6344909Y2 (fr)
SU1465840A1 (ru) Устройство дл испытани выключателей на отключение емкостного тока
KR940006437Y1 (ko) 전자기기의 스위치조작시 스파크발생 방지회로
SU1372470A1 (ru) Устройство емкостной поперечной компенсации трехфазной сети высокого напр жени
JPS6353656B2 (fr)
SU1141493A2 (ru) Устройство дл защиты от поражени электрическим током
RU2084037C1 (ru) Устройство коммутации шунтирующего реактора
SU1185488A1 (ru) Устройство дл компенсации однофазного тока замыкани
JPH04117136A (ja) コンデンサバンク開閉用開閉装置
JPS5954132A (ja) 直流遮断器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AC Divisional application: reference to earlier application

Ref document number: 118094

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR LI

17P Request for examination filed

Effective date: 19890831

17Q First examination report despatched

Effective date: 19910702

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 118094

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR LI

REF Corresponds to:

Ref document number: 3485516

Country of ref document: DE

Date of ref document: 19920326

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960125

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960227

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960315

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19970228

Ref country code: CH

Effective date: 19970228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19971030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST